Title :
A 4μA-quiescent-current dual-mode buck converter IC for cellular phone applications
Author :
Jinwen Xiao ; Peterchev, Angel ; Jianhui Zhang ; Sanders, Sean
Author_Institution :
California Univ., Berkeley, CA
Abstract :
This digitally-controlled buck converter IC occupies 2 mm2 active area in 0.25mum CMOS, and the quiescent current is 4VA, representing more than a 3-fold improvement over the leading state-of-the-art analog approach. As a result, cellular phone standby time can be extended by up to 3 times
Keywords :
CMOS digital integrated circuits; DC-DC power convertors; PWM power convertors; cellular radio; digital control; power integrated circuits; pulse frequency modulation; 4 pA; CMOS N-well process; cellular phone standby time; controller IC; digital PWM module; digital dither; digitally-controlled buck converter IC; dual-mode buck converter; external LC filter; internal power management; pulse frequency modulation mode; quiescent-current; transient response; Application specific integrated circuits; Buck converters; Cellular phones; Digital control; Driver circuits; Pulse width modulation; Ring oscillators; Space vector pulse width modulation; Switches; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8267-6
DOI :
10.1109/ISSCC.2004.1332703
